What a magnificent cause it is to work for the happiness of mankind, and how great this purpose is! ——Saint Simon

The greatest possible happiness for each person is in the greatest happiness achieved by all people. ——Zola

True happiness can only be realized when you truly understand the value of life. —— Munir Nasuf

Happy are those who are interested in research! Happier are those who can free their minds from delusion and free themselves from vanity through research. —— Lametli

Treat the happiness of others as your own happiness, dedicate flowers to others, and keep the thorns to yourself! —— Valdes

As long as you have a reasonable thing to do, your life will be particularly beautiful. —— Einstein

Science is by no means a selfish pleasure. Those who are fortunate enough to devote themselves to scientific research should first use their knowledge to serve mankind. ——Marx

Even if you become a handful of dirt, as long as it is paved on the road to truth and your friends can stride across, it will be the greatest happiness. ——Wu Yunduo

The purpose of all human efforts is to obtain happiness. —— Owen

Only a revolutionary, whether he lives or dies, can bring happiness to everyone. ——Lu Xun

Cows eat grass and horses eat food. Cows enjoy the least and contribute the most, so it is best to be a scalper. I am willing to serve the party and the people as a scalper for the rest of my life. ——Wang Jinxi

People gain happiness when they perform their duties. It's like a person carrying something on his back, but he feels very comfortable. If a person does not have it and does not perform any duties, it is like driving an empty car, that is, it is wasted. —— Rozov

My art should only benefit poor people. Ah, what a happy moment! How happy I will be when I can come close to this! ——Beethoven

Create, or prepare future creation. It is a necessity: happiness can only exist when this necessity is satisfied. —— Romain Rolland

The more happiness is shared with others, the more its value increases. ——Seiichi Morimura

The bounden duty of scientists requires us to continue to strive to completely reveal the mysteries of nature. Mastering these mysteries can benefit mankind in the future. —— Joliot Curie

Only the happiness of the entire mankind is your happiness. ——Di Cigen

If happiness lies in physical pleasure, then it should be said that the cow is happy when it finds fodder to eat. —— Heraclitus

If one day, I can contribute to the interests of our public, I will consider myself the happiest person in the world. —— Gogol

Personal pain and joy must be integrated into the pain and joy of the times. ——Ai Qing

There are tens of millions of mansions in Ande, which can shelter all the poor people in the world with joy. ——Du Fu

A person who has lofty ideals will feel happy even in the most difficult and difficult times. ——Xu Teli

Of course a writer must make money to live and write, but he should never live and write to make money. ——Marx

Blessed are those who have nothing, because they will gain everything! —— Romain Rolland

When you are happy, never lose the virtues that make you happy. —— Moroa

Happiness, if it only belongs to me, the property of one person among thousands of people, then get away from me! —— Belinsky

No matter how difficult it is, the struggle for happiness is not a pain, but a joy, not a tragedy, but a drama. —— Chernyshevsky

Happiness built on the suffering of others is not true happiness. ——A. Babaeva

It is a myth to get happiness without paying any price. ——Xu Teli

Hope to be adopted